<script setup>
defineProps({
  modelValue: String
})
</script>
<template>
  <div>
    <div>name: {{ modelValue }}</div>
    <button @click="$emit('update:modelValue', '吕布')">click</button>

    <button @click="$emit('update:age', 19)">update age</button>
  </div>
</template>
